Studies on the Synthetic Utility of [6 + 3] Cycloaddition of Pentafulvenes with 3-Oxidopyrylium Betaines: Efficient Synthesis of Fused Ring Cyclooctanoids.

[6 + 3] Cycloaddition of Pentafulvenes w

[6 + 3] Cycloaddition of Pentafulvenes with 3-Oxidopyrylium Betaine: A Novel Methodology Toward the Synthesis of 5—8 Fused Oxabridged Cyclooctanoids.

✍ K. Syam Krishnan; V. S. Sajisha; S. Anas; C. H. Suresh; Mohan M. Bhadbhade; Gaur 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 15 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

[6 + 3] Cycloaddition of Fulvenes with 3

[6 + 3] Cycloaddition of Fulvenes with 3-Oxidopyrylium Betaine: A Novel Methodology for the Synthesis of Fused Cyclooctanoid Natural Products.

✍ K. V. Radhakrishnan; K. Syam Krishnan; Mohan M. Bhadbhade; Gaurav V. Bhosekar 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 16 KB

Regioselective Synthesis of Novel 7-5-8-

Regioselective Synthesis of Novel 7-5-8-Fused Oxabridged Tricyclic Molecules via Consecutive Dipolar Cycloaddition of Pentafulvenes with 3-Oxidopyrylium Betaines.

✍ K. Syam Krishnan; E. Suresh; Saumini Mathew; K. V. Radhakrishnan 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 21 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Studies on the chemical transformations

Studies on the chemical transformations of rotenoids. 5. Synthesis and cytotoxicity of 1,3-diazepino[5,6-b]benzofuran and pyridazino[4,5-b]benzofurans fused with thiazole, imidazole and pyrimidine

✍ Shin-ichi Nagai; Taisei Ueda; Hiroyuki Sakakibara; Akito Nagatsu; Nobutoshi Mura 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 359 KB

## Abstract Novel benzofuro[2,3‐__d__]pyridazinium chlorides fused with thiazole 5a, imidazole 5b‐c and pyrimidine 5d‐f were prepared starting from 4‐chloropyridazino[4,5‐__b__]benzofuran 3a. Treatment of 5b, 5d and 5e with 10% potassium carbonate solution provided the corresponding free bases 6a‐c

Studies on the chemical transformations

Studies on the chemical transformations of rotenoids. 6 Synthesis and antitumor-promoting activity of benzofuro[2,3-d]pyridazines fused with 1,2,4-triazole, 1,2,4-triazine and 1,2,4-triazepine

✍ Shin-Ichi Nagai; Satoshi Takemoto; Taisei Ueda; Kanako Mizutani; Yasuhiro Uozumi 📂 Article 📅 2001 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 57 KB

## Abstract [1]Benzofuro[2,3‐__d__]pyridazines fused with 1,2,4‐triazole (**6** and **7**), 1,2,4‐triazine (**8–10**) and 1,2,4‐tri‐azepine (12) were prepared by the ring closure of 4‐hydrazino‐[1]benzofuro[2,3‐__d__]pyridazine (**5**), derived from naturally occurring rotenone. Compounds (**la** a

ChemInform Abstract: Studies on the Chem

ChemInform Abstract: Studies on the Chemical Transformations of Rotenoids. Part 6. Synthesis and Antitumor-Promoting Activity of [1]Benzofuro[2,3-d]pyridazines Fused with 1,2,4-Triazole, 1,2,4-Triazine and 1,2,4-Triazepine.

✍ Shin-ichi Nagai; Satoshi Takemoto; Taisei Ueda; Kanako Mizutani; Yasuhiro Uozumi 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 39 KB 👁 2 views